Alloy design of directionally solidified TiAl-Nb-Si-C alloys with excellent thermal stability and mechanical properties with lamellar microstructures

摘要

lamellar structure of the present invention has excellent thermal stability and mechanical properties of the alloy that TiAlNbSiC more detail is in the TiAl alloy , niobium (niobium, Nb), silicon (Si), carbon (C) relates to a layered structure of the thermal stability and mechanical properties are superior to TiAlNbSiC based alloy to contain a . ; TiAlNbSiC based alloy according to the present invention, the conventional TiAl alloy , niobium (Nb), silicon (Si), carbon (C) comprises a contained TiAlNbSiC alloy . The Al -based alloy is in TiAlNbSiC 44.5~45at%, Nb is 2~3at%, Si is 0.4~0.6at%, C is 0.2~0.3at%.